There appears to be some green corrosion in one of the pictures. this would indicate that it could be bronze. That’s consistent with the stated age of the sword as being well before the Iron Age. An iron alloy would likely not have green corrosion.
Bronze, something like 90% copper and 10% tin...Not forged...Cast, most likely in a clay or sand mold, from poured molten bronze...
Interesting videos on YouTube demonstrating the technique...
One example: https://www.youtube.com/watch?v=RmLvWRjgOVs